Who doesn’t like marshmallows? We all definitely like them! Since the launch of the M Developer Preview at Google I/O in May. Today with the final Developer Preview update, Google introducing the official Android 6.0 SDK and opening Google Play for publishing your apps that target the new API level 23 in Android Marshmallow.

Check your App Permissions

Along with the new platform features like fingerprint support and Doze power saving mode, Android Marshmallow features a new permissions model
that streamlines the app install and update process. To give users this
flexibility and to make sure your app behaves as expected when an
Android Marshmallow user disables a specific permission, it’s important
that you update your app to target API 23, and test the app thoroughly
with Android Marshmallow users.

How to Get the Update

The Android emulator system images and developer preview system
images have been updated for supported Nexus devices (Nexus 5, Nexus 6,
Nexus 9 & Nexus Player) to help with your testing. You can download
the device system images from the developer preview site.
Also, similar to the previous developer update, supported Nexus devices
will receive an Over-the-Air (OTA) update over the next couple days.
Although the Android 6.0 SDK is final, the devices system images are
still developer preview versions. The preview images are near final but
they are not intended for consumer use. Remember that when Android 6.0
Marshmallow launches to the public later this fall, you'll need to
manually re-flash your device to a factory image to continue to receive consumer OTA updates for your Nexus device.

What is New in Android 6.0 SDK

Compared to the previous developer preview update, you will find this
final API update fairly incremental. You can check out all the API
differences here, but a few of the changes since the last developer update include:

Android Platform Change:

Final Permissions User Interface — we updated the permissions user interface and enhanced some of the permissions behavior.

Upload your Android Marshmallow apps to Google Play

Google Play is now ready to accept your API 23 apps via the Google
Play Developer Console on all release channels (Alpha, Beta &
Production). At the consumer launch this fall, the Google Play store
will also be updated so that the app install and update process supports
the new permissions model for apps using API 23.
To make sure that your updated app runs well on Android Marshmallow and older versions, we recommend that you use Google Play’s newly improved beta testing feature to get early feedback, then do a staged rollout as you release the new version to all users.